# 河川カメラ vs 横浜市避難ナビ

The clearest difference is in-app purchases: 横浜市避難ナビ at none against 河川カメラ's 4. 横浜市避難ナビ also leads on ads (none vs shown) and iOS requirement (11.0 vs 15.6). 河川カメラ's advantage is update cadence (every 3 weeks vs every 3 months). On price, review sentiment and device support there is nothing between them.

Both are free to download. 河川カメラ sells 4 one-off in-app purchases. 横浜市避難ナビ asks for nothing beyond the download.

河川カメラ ships an update every 3 weeks, 横浜市避難ナビ every 3 months. Both last shipped on October 30, 2026.

## The numbers

| Metric | 河川カメラ | 横浜市避難ナビ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/river/id1566760183/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | **24.0% of reviews** | 22.2% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 3 weeks** | Every 3 months |
| Monetization | Free with in-app purchases | — |
| Size | 107 MB | 281 MB |
| Requires iOS | 15.6 | **11.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [hidehiko aihara](https://appshunter.io/developer/1178520609) | [YOKOHAMA CITY](https://appshunter.io/developer/1611478125) |

## What reviewers say

### 河川カメラ

[App page](https://appshunter.io/ios/app/river/id1566760183)

Access real-time still images from over 10,000 river cameras nationwide. Track rainfall intensity with intuitive color-coded rain clouds and view detailed weather forecasts. Stay informed about weather conditions and potential flood risks.

**Highlights:** Nationwide river camera access, Real-time rain cloud visualization, Detailed weather forecasts, Precipitation intensity tracking, Favorite locations, Radar precipitation nowcasting

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Coffee (Regular) | $0.49 | one-time |
| 開発者応援 | $1.99 | one-time |
| Coffee (Large) | $1.99 | one-time |
| Cake Set | $5.99 | one-time |


### 横浜市避難ナビ

[App page](https://appshunter.io/ios/app/id1611478123)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 河川カメラ free?

河川カメラ is free to download, with in-app purchases available.

### Is 横浜市避難ナビ free?

横浜市避難ナビ is free to download, with no in-app purchases.

### Do 河川カメラ or 横浜市避難ナビ have ads?

河川カメラ shows ads; 横浜市避難ナビ does not.

### Which is updated more often, 河川カメラ or 横浜市避難ナビ?

河川カメラ ships an update every 3 weeks, and 横浜市避難ナビ every 3 months. Most recently, 河川カメラ was updated on October 30, 2026 and 横浜市避難ナビ on October 30, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*